zeromq 3.2.3: configure --with-system-pgm doesn't detect openpgm-5.2

The configure{,.in,.ac} doesn't detect the pkgconfig file installed by openpgm 5.2. The problem is that the openpgm pkgconfig filename is versioned and hardcoded to version 5.1 in the configure file (and openpgm
5.2 installs an openpgm-5.2 pkgconfig file - '/usr/lib64/pkgconfig/openpgm-5.2.pc'):

Projects affected:

• libzmq - configure.ac file

• zeromq3 - configure.in file

Offending line in zeromq3-x.git/configure.in:
...
PKG_CHECK_MODULES([OpenPGM], [openpgm-5.1 >= 5.1])
...

How to reproduce the problem:
1 - build and install openpgm 5.2.122
2 - build zeromq 3.2.3 with "configure --with-system-pgm"

Build error:
----------
...
checking for OpenPGM... no
configure: error: Package requirements (openpgm-5.1 >= 5.1) were not met:
No package 'openpgm-5.1' found
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
Alternatively, you may set the environment variables OpenPGM_CFLAGS
and OpenPGM_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
---------

More information in Red Hat's bugzilla:

• https://bugzilla.redhat.com/show_bug.cgi?id=963891

• https://bugzilla.redhat.com/show_bug.cgi?id=963894