public: move build.c from engine to public library, in preparation of filesystem_stdio merge

engine/common/common.h

@@ -667,16 +667,6 @@ void FS_FreeStream( stream_t *stream );
 qboolean Sound_Process( wavdata_t **wav, int rate, int width, uint flags );
 uint Sound_GetApproxWavePlayLen( const char *filepath );
 
-//
-// build.c
-//
-int Q_buildnum( void );
-int Q_buildnum_compat( void );
-const char *Q_buildos( void );
-const char *Q_buildarch( void );
-const char *Q_buildcommit( void );
-
-
 //
 // host.c
 //

public/build.c

@@ -13,7 +13,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 */
 
-#include "common.h"
+#include "crtlib.h"
 
 static const char *date = __DATE__ ;
 static const char *mon[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };

public/crtlib.h

@@ -44,6 +44,15 @@ enum
 #define PFILE_TOKEN_MAX_LENGTH 1024
 #define PFILE_FS_TOKEN_MAX_LENGTH 512
 
+//
+// build.c
+//
+int Q_buildnum( void );
+int Q_buildnum_compat( void );
+const char *Q_buildos( void );
+const char *Q_buildarch( void );
+const char *Q_buildcommit( void );
+
 //
 // crtlib.c
 //