Remove acinclude.m4 file

Split the bit acinclude.m4 file into smaller pieces named
as m4/virt-XXXXX.m4

* .gitignore: Ignore gettext related files
* acinclude.m4: Delete
* m4/virt-compile-warnings.m4: Checks for GCC compiler flags
* m4/virt-pkgconfig-back-compat.m4: Backcompat check for
  pkgconfig program

.gitignore

-!/m4/compiler-flags.m4
+!/m4/virt-*.m4
 !/po/*.po
 !/po/POTFILES.in
 !/po/libvirt.pot

acinclude.m4 → m4/virt-compile-warnings.m4

@@ -132,28 +132,3 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
     AC_SUBST(WARN_PYTHON_CFLAGS)
     WARN_CFLAGS=$save_WARN_CFLAGS
 ])
-
-
-dnl
-dnl To support the old pkg-config from RHEL4 vintage, we need
-dnl to define the PKG_PROG_PKG_CONFIG macro if its not already
-dnl present
-m4_ifndef([PKG_PROG_PKG_CONFIG],
-  [AC_DEFUN([PKG_PROG_PKG_CONFIG],
-[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
-m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
-AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
-if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
-        AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
-fi
-if test -n "$PKG_CONFIG"; then
-        _pkg_min_version=m4_default([$1], [0.9.0])
-        AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
-        if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
-                AC_MSG_RESULT([yes])
-        else
-                AC_MSG_RESULT([no])
-                PKG_CONFIG=""
-        fi
-fi[]dnl
-])])

m4/virt-pkgconfig-back-compat.m4

+dnl
+dnl To support the old pkg-config from RHEL4 vintage, we need
+dnl to define the PKG_PROG_PKG_CONFIG macro if its not already
+dnl present
+m4_ifndef([PKG_PROG_PKG_CONFIG],
+  [AC_DEFUN([PKG_PROG_PKG_CONFIG],
+[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
+m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+        AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+fi
+if test -n "$PKG_CONFIG"; then
+        _pkg_min_version=m4_default([$1], [0.9.0])
+        AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+        if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+                AC_MSG_RESULT([yes])
+        else
+                AC_MSG_RESULT([no])
+                PKG_CONFIG=""
+        fi
+fi[]dnl
+])])