rocm 2.7 release + packaging fix

[RPM]fix prerm script incorrectly deleting symlinks during an upgrade

Change-Id: Ib2c6bf22e375cef6042fb49817a838d9f746b8be

ROCm 1.9 + linking with host linker + relative path lookup for rocdl

support relative path for rocdl lookup

Change-Id: I6374ad6deba40e3812fbcfc3d6b5c8a4fb3df4ae

Pre-release binaries for early finalization support in hcc and hip 1.9

Pre-release binaries for early finalization support in hcc and hip 1.9.
For usage, see code examples in the tarball