change ABI_VERSION back to just include the major number

By default, GCC hard codes the name for ld.so to /lib/ld-uClibc.so.0
so our default should match that. If distribution makers want to change
it, they need to change the default gcc configuration as well.

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

Rules.mak

@@ -108,9 +108,7 @@ MINOR_VERSION := 9
 SUBLEVEL      := 32
 EXTRAVERSION  :=-git
 VERSION       := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
-# no abi compat between sublevel releases yet, so we use full version
-# for soname
-ABI_VERSION   := $(VERSION)
+ABI_VERSION   := $(MAJOR_VERSION)
 ifneq ($(EXTRAVERSION),)
 VERSION       := $(VERSION)$(EXTRAVERSION)
 endif