issue 99: adding sample to demonstrate config of master + 3 slaves + 3 sentinels on one box. Discovered along the way that maxheap would not propagate through .conf include statements. It does now.

fox for issue #90. info.rdb_changes_since_last_save not being properly updated. Also dealt with the exit code from a failed fork not making it back to the parent.

sprintf argument change to fix a compiler warning caused forked process to fail to map control structure unexpectedly. Fixing in a different manner.

using memtoull instead of _atoi64 while parsing maxmemory and maxheap flags. 'redis-server --maxmem 500m --maxheap 2g' works

Added --maxheap flag to control size of memory mapped file created. Heap can now exceed size of physical memory. See long comment in Win32_qfork.cpp about implications of using --maxheap flag.

Fixed 1-off bug allocating last block of MMF. Added additional heap allocation with maxmemory flag to allow for fragmentation.

Removing maxheapgb flag in favor of utilizing existing maxmemory flag. Now honoring maxmemory flag in .conf files. Slightly modified default MMF startup requirements to [phys - min(0.2*phys, 3GB)]

Changing heap size calculation to be 80% of physical ram. This allow the server to start on Azure S and XS machines.

moving win32 specific code into a static lib so that it compiles only once, also some minor code tidying

Added dictionary master hash to global state being copied into qforked process. This fixes the fork/expire problems.

replacing win32_cow implementation with win32_qfork. replication currently broken, but all other unit tests are working.