The warning with more then one job was: "make[1]: warning:
jobserver unavailable: using -j1. Add `+' to parent make rule."
Still, I get no speedup for -jN with N > 1.

[[Imported from SVN: r6872]]

print warnings, but continue compilation
(thanks to Tobias Malkmus)

[[Imported from SVN: r6853]]

[[Imported from SVN: r6455]]

[[Imported from SVN: r6005]]

[[Imported from SVN: r5948]]

[[Imported from SVN: r5844]]

[[Imported from SVN: r5818]]

[[Imported from SVN: r5756]]

[[Imported from SVN: r5755]]

- you can now add
  headercheck_IGNORE=foo.hh
  to your Makefile.am to skip the headercheck for foo.hh

[[Imported from SVN: r5690]]

(I have a header which serves as a common denominator for several .cc files --
those only have to do typedef ... Grid; and include the header to work for
different grids.  Of course, hctest.cc does not have that typedef so I have to
work around it)


[[Imported from SVN: r5668]]

[[Imported from SVN: r5601]]

[[Imported from SVN: r5564]]

For silent mode use make SILENT=1 and for verbose SILENT=0
Default: if no header is given: SILENT=1
         if header is given: SILENT=0

[[Imported from SVN: r5284]]

[[Imported from SVN: r5283]]

[[Imported from SVN: r5269]]

[[Imported from SVN: r5268]]

[[Imported from SVN: r5267]]