LP #1541601: PAM plugin build warning for IF...ENDIF

**Reported in Launchpad by Tomislav Plavcic last update 09-02-2016 09:06:29

When building 5.7.10-rc2 I see following:
21:06:11 CMake Warning (dev) in plugin/percona-pam-for-mysql/CMakeLists.txt:
21:06:11 A logical block opening on the line
21:06:11
21:06:11 /mnt/workspace/percona-server-5.7-debian-binary/label_exp/ubuntu-precise-64bit/percona-server-5.7-5.7.10-2rc2/plugin/percona-pam-for-mysql/CMakeLists.txt:29 (IF)
21:06:11
21:06:11 closes on the line
21:06:11
21:06:11 /mnt/workspace/percona-server-5.7-debian-binary/label_exp/ubuntu-precise-64bit/percona-server-5.7-5.7.10-2rc2/plugin/percona-pam-for-mysql/CMakeLists.txt:42 (ENDIF)
21:06:11
21:06:11 with mis-matching arguments.
21:06:11 This warning is for project developers. Use -Wno-dev to suppress it.

This doesn't look ok:
IF(HAVE_PAM AND HAVE_GETPWNAM_R AND HAVE_GETGRGID_R AND HAVE_DLFCN_H)
...
ENDIF(HAVE_PAM AND HAVE_GETPWNAM_R AND HAVE_GETGRGID_R)