Revert "glibc compat: bump glibc minor version"

This reverts commit 4a05ed87ceb946608100642121c32e642b58cd0d.

This breaks SSP detection for gcc, which might be problematic
for some projects. Revert it after some discussion with
buildroot and openembedded people.

include/features.h

@@ -393,7 +393,7 @@ uClibc was built without large file support enabled.
    these macros to test for features in specific releases.  */
 /* Don't do it, if you want to keep uClibc happy.  */
 #define	__GLIBC__	2
-#define	__GLIBC_MINOR__	10
+#define	__GLIBC_MINOR__	2
 #endif
 
 #define __GLIBC_PREREQ(maj, min) \