genericvector: Fix minimum size

Commit 907de599 tried to improve
GenericVector, but missed a case where vectors with less than
kDefaultVectorSize were allocated. This resulted in additional
alloc / free operations.

Commit a28b2a03 (before memory optimization)
oem 0: total heap usage: 739,238 allocs, 739,237 frees, 161,699,214 bytes allocated
oem 1: total heap usage: 690,182 allocs, 690,175 frees, 144,470,400 bytes allocated
oem 2: total heap usage: 728,213 allocs, 728,206 frees, 182,885,824 bytes allocated

Commit fd3f8f9b without genericvector change
oem 0: total heap usage: 738,980 allocs, 738,979 frees, 161,697,150 bytes allocated
oem 1: total heap usage: 690,182 allocs, 690,175 frees, 144,470,400 bytes allocated
oem 2: total heap usage: 728,213 allocs, 728,206 frees, 182,885,824 bytes allocated
=> Improvements for oem 0, no change for oem 1 and oem 2.

Commit fd3f8f9b
oem 0: total heap usage: 772,648 allocs, 772,647 frees, 160,083,901 bytes allocated
oem 1: total heap usage: 748,591 allocs, 748,584 frees, 143,581,672 bytes allocated
oem 2: total heap usage: 764,796 allocs, 764,789 frees, 181,212,197 bytes allocated
=> Less bytes allocated, but more allocs / frees = bad for performance.

Commit fd3f8f9b with this patch
oem 0: total heap usage: 677,537 allocs, 677,536 frees, 160,444,634 bytes allocated
oem 1: total heap usage: 653,812 allocs, 653,805 frees, 143,423,008 bytes allocated
oem 2: total heap usage: 670,029 allocs, 670,022 frees, 181,517,760 bytes allocated
=> Improvements for all three cases.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Replace Tesseract data types by POSIX data types

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Remove unused local variables

This fixes some compiler warnings.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

doc: Fix use of MAINTAINER_MODE

Remove freelist,c and freelist.h

It must also include man_MANS – otherwise make tries to build the
man pages also in non maintainer mode without having a rule for that.

This fixes commit 2794410c.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

free also accepts a nullptr argument, so the code can be simplified.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

free also accepts a nullptr argument, so the code can be simplified.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

The case (destructor == NULL) never occurs in the current code.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Replace memalloc / memfree by C++ new / delete

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Remove unused code

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

RFC – doc: Remove generated files and add rules to build manpages

Avoid unnecessary new / delete code

The class variable mutex_send_ does not require an indirection
by using a pointer.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Both class variables BaselineCutoffs and CharNormCutoffs were pointers
to fixed size arrays which were allocated in the constructor and
deallocated in the destructor. These two extra allocations and two
extra deallocations can be avoided.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

It's also not necessary to nullify class variables in the destructor.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Signed-off-by: NStefan Weil <sw@weilnetz.de>

Avoid unnecessary memory allocations

Use Leptonica struct names L_Compressed_Data, Pix

Replace alloc_struct, free_struct

Those files can be built by doc/generate_manpages.sh.

The manpages are needed for the installation,
so add Makefile rules for them.

Git must ignore the generated manpages.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

The Tesseract project prefers that names, so fix the remaining exceptions.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Both functions simply call malloc, free.

Remove also unneeded null pointer checks and use calloc where possible.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

tidy tesseract(1) adding missing options

doc: Remove unsupported font name

Fix typo in comment