Allow comments in flag and headers
Allow comments in flag and headers

Allow comments and empty lines in flag and header files.

Change-Id: I127ec83ffc926d0b80dcc725663afcca3aa79c5d

savinash47/openstack-doc-tools,savinash47/openstack-doc-tools,savinash47/openstack-doc-tools,openstack/openstack-doc-tools,openstack/openstack-doc-tools