Fix compilation issues under clang

clang defaults to c99 so remove inline statements
(http://clang.llvm.org/compatibility.html#inline ) on functions shared
across different translation units.
clang's linker doesn't like major numbers over 255 so change how SOREL
is generated in Makefile.am.

Makefile.am

@@ -43,9 +43,12 @@ lib_libiscsi_la_SOURCES += lib/md5.c
 endif
 
 SONAME=3
-SOREL=$(shell printf "%d%02d%02d" $(subst ., ,$(VERSION)))
+SOMAJOR = $(firstword $(version_split))
+SOMINOR = $(word 2, $(version_split))
+SOREVISION = $(word 3, $(version_split))
+SOREL = $(shell echo $(SOMINOR) + $(SOREVISION))
 lib_libiscsi_la_LDFLAGS = \
-	-version-info $(SONAME):$(SOREL):0 -bindir $(bindir) -no-undefined \
+	-version-info $(SONAME):$(SOMAJOR):$(SOREL) -bindir $(bindir) -no-undefined \
 	-export-symbols $(srcdir)/lib/libiscsi.syms
 
 # libiscsi utilities