libs have no SONAME

[tjaalton]

The produced libs have no SONAME, please fix that so that distros can ship proper packages.

[chivakker]

Please do fix this, but also please explain how you're going to make compatibility work with different versions of dependencies, it would be good if you guys can describe the full picture.

[iwwu]

Among our list of .so libraries, libcommon_clang.so has SONAME set. I'll look into adding this field to other libraries
libiga.so
libigc.so
libigdfcl.so
libopencl_clang.so

[nandojve]

I had problems to build NEO because of IGC libraries.

1. When a shared library isn't found, ocloc abort without any error message. Please, when load shared library check properly and print/log error message to help users.
2. Library names isn't right: Can't build runtime/built_ins/kernels compute-runtime#133
   Please, use the right denomination to all libraries:

LINK          22 Feb 19 21:13 libcommon_clang.so -> libcommon_clang.so.7.1
SONAME        22 Feb 19 21:13 libcommon_clang.so.7 -> libcommon_clang.so.7.1
LIBRARY 73373504 Feb 18 20:17 libcommon_clang.so.7.1

I believe this small improvement could help a lot.

[tripzero]

#74 fixes this issue.

[paigeale]

Closing. Issue fixed with 3cc1170