patch 7.4.1106
Problem: The nsis script can't be used from the appveyor build.
Solution: Add "ifndef" to allow for variables to be set from the command
line. Remove duplicate SetCompressor command. Support using other
gettext binaries. (Ken Takata) Update build instructions to use
libintl-8.dll.
diff --git a/src/proto/os_win32.pro b/src/proto/os_win32.pro
index 5816fc9..e6fce88 100644
--- a/src/proto/os_win32.pro
+++ b/src/proto/os_win32.pro
@@ -1,6 +1,6 @@
/* os_win32.c */
HINSTANCE vimLoadLib __ARGS((char *name));
-int dyn_libintl_init __ARGS((char *libname));
+int dyn_libintl_init __ARGS((void));
void dyn_libintl_end __ARGS((void));
void PlatformId __ARGS((void));
int mch_windows95 __ARGS((void));