PAM: Fix compilation of pam_test_client with openpam linuxpam and openpam use different functions for text based conversation. Reviewed-by: Sumit Bose <sbose@redhat.com>

PAM: Fix problem with missing declaration. The functions strdup and strncmp are used in pam_test_client, but header file string.h was not included directly in this file. The header file string.h was indirectly included by the header file security/pam_client.h. src/sss_client/pam_test_client.c: In function 'main': src/sss_client/pam_test_client.c:45: error: implicit declaration of function 'strdup' src/sss_client/pam_test_client.c:45: warning: incompatible implicit declaration of built-in function 'strdup' src/sss_client/pam_test_client.c:49: warning: incompatible implicit declaration of built-in function 'strdup' src/sss_client/pam_test_client.c:52: warning: incompatible implicit declaration of built-in function 'strdup' src/sss_client/pam_test_client.c:64: error: implicit declaration of function 'strncmp' gmake[2]: *** [src/sss_client/pam_test_client.o] Error 1 sh-4.2$ nm --undefined-only ./pam_test_client | grep -E "strdup|strncmp" U __strdup@@GLIBC_2.2.5 U strncmp@@GLIBC_2.2.5 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

PAM: Test return value of strdup Warnings reported by Coverity (12463,12464) Dereferencing a pointer that might be null pi->pam_authtok when calling strlen. Dereferencing a pointer that might be null action when calling strncmp. Reviewed-by: Stephen Gallagher <sgallagh@redhat.com>

Fix licensing issues for sss_client

Rename server/ directory to src/ Also update BUILD.txt