MFC 220227:

MFC 220227:

 GNU awk does not output escaped newlines in multi-line printc statements.
 This leads to compile errors when trying to compile firmware(9) stubs
 created with gawk, as multiple #include statements end up on the same
 line.  Replace the multi-line printc statement that outputs all of the
 #includes with one printc per #include.  This allows modules compatible
 with firmware(9) to be cross-built from a Linux machine without requiring
 the one true awk to be installed.

 I've intentionally done the minimal set of changes necessary to make gawk
 produce valid (but not pretty) C code, to reduce the churn and keep
 fw_stubs.awk as readable as possible.

git-svn-id: svn://svn.freebsd.org/base/stable/8@227437 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f