C4GL 7.51.FC4 ships *15a .so libraries and non-15a .so libraries that are in fact identical

Hello, After installing Informix 4GL 7.51.FC4, I see several (older) *.so libs that have the same content then new *15a.so libs. $ md5sum DEV-7.51.FC4/lib/esql/libifsql*so 5e08b67a797bfd6faed87320a360714b DEV-7.51.FC4/lib/esql/libifsql15a.so 5e08b67a797bfd6faed87320a360714b DEV-7.51.FC4/lib/esql/libifsql.soIs this expected? CSDK 4.50 and 15 have different binaries: md5sum CSDK-4.50.FC11W1/lib/esql/libifsql.so 3e6a51d73181c4257f7cb2b713660a1b CSDK-4.50.FC11W1/lib/esql/libifsql.so $ md5sum CSDK-15.0.0.1/lib/esql/libifsql15a.so 5e08b67a797bfd6faed87320a360714b CSDK-15.0.0.1/lib/esql/libifsql15a.soSeb ------------------------------ Sebastien FLAESCH ------------------------------