Use 0.99.7.GIT as version between 0.99.7 and 0.99.8

Pasky taught me how he does his versioning for ELinks.  This will sort
after 0.99.7 and interim fixes 0.99.7a, and before 0.99.8.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Makefile

@@ -48,7 +48,7 @@
 
 # DEFINES += -DUSE_STDEV
 
-GIT_VERSION = 0.99.7
+GIT_VERSION = 0.99.7.GIT
 
 CFLAGS = -g -O2 -Wall
 ALL_CFLAGS = $(CFLAGS) $(PLATFORM_DEFINES) $(DEFINES)