Fix build error when building a shared libunistring on Android. * tests/uninorm/test-nfc.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference. * tests/uninorm/test-nfd.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference. * tests/uninorm/test-nfkc.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference. * tests/uninorm/test-nfkd.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference.

Files:
tests/test-fseek.c
tests/test-fseek.sh
tests/test-fseek2.sh
tests/signature.h
tests/macros.h
m4/ungetc.m4

Depends-on:

configure.ac:
gl_FUNC_UNGETC_WORKS

Makefile.am:
TESTS += test-fseek.sh test-fseek2.sh
check_PROGRAMS += test-fseek