Binary distribution: library doesn't get installed

[ralphlange]

Reported by @hanlet:

When setting an INSTALL_LOCATION, the binary shared library does not get installed.

[ralphlange]

The binary shared library doesn't ever get installed - even without setting INSTALL_LOCATION. The example binary loads it from the source tree:

ralph@debian-11:~/work/EPICS/binaryOpcuaIoc$ ldd bin/linux-x86_64/opcuaIoc 
        linux-vdso.so.1 (0x00007fff2a7e9000)
        libopcua.so.0.9 => /home/ralph/work/EPICS/binaryOpcuaIoc/opcuaIocApp/libopcua.so.0.9 (0x00007f4bd5295000)
        libdbRecStd.so.3.22.0 => /home/ralph/work/EPICS/base/7.0.7/lib/linux-x86_64/libdbRecStd.so.3.22.0 (0x00007f4bd524d000)
        libdbCore.so.3.22.0 => /home/ralph/work/EPICS/base/7.0.7/lib/linux-x86_64/libdbCore.so.3.22.0 (0x00007f4bd51b5000)
        [...]