talpa unload sometimes takes time to remove modules, check and sleep if modules are still loading. Appears to cause issues on RHEL7. 

[git-p4: depot-paths = "//dev/talpa/main/": change = 2418212]
look out of extra includes in the Oracle 7 UEK kernel unistd.h and unistd_64_x32.h. Added flags to look out for these files and add them to the search path for unit tests. 

{+JD}

[git-p4: depot-paths = "//dev/talpa/main/": change = 2419216]
Kernelhdrpath broken due to previous changes

[git-p4: depot-paths = "//dev/talpa/main/": change = 2422241]
[DEF97111] Reduce message priority to debug, to avoid logging when it's a normal operation.

In the fix for DEF95055 we added extra messages to check the path of execution. However they were set to err() level, but should have been changed to dbg() before release.

[+DLCL]

[git-p4: depot-paths = "//dev/talpa/main/": change = 2423371]