[CMake] Add possibility to enable or disable HTTP (disable by default)
[RPM] Exclude the http libraries
[CMake] Rename XrdHTTP to XrdHttp for consistency with the rest of the project
Add missing link to libcrypto
Fix Solaris warnings/errors
Revert "Add missing link to libcrypto"

This reverts commit 06e10276f9ff394fde871ecb970c34ab51d54c0c.