compile fixes

enable fortran interface for routines in dasub.c

rules: add `.cxx.a` extension to rule

rules: use c++ compilers when compiling c++ archive members

Remove redundant info from gmakefile.

Per discussion, gmakefile.examples has been changed to
gmakefile.test. It is now included in gmakefile to enable
the removal of redundant information. Tests o

Remove redundant info from gmakefile.

Per discussion, gmakefile.examples has been changed to
gmakefile.test. It is now included in gmakefile to enable
the removal of redundant information. Tests on whether
gmakefile or gmakefile.test is invoked is used to print
out the appropriate help information for that file (i.e.,
do not print out test info for basic compiles).

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Enable tests to run from install directories.

Previous incarnations of the test harness did not run from installation
(prefix) directories. To enable this feature, the make part of the test
harness

Enable tests to run from install directories.

Previous incarnations of the test harness did not run from installation
(prefix) directories. To enable this feature, the make part of the test
harness was separated from the build gmakefile to create
gmakefile.examples. Install.py then installs the harness, and fixes up
the gmakefile.examples to make it work robustly in the installation dir.
The install paths are:
```
<prefix_dir>/share/petsc/examples/gmakefile.example
<prefix_dir>/share/petsc/examples/config/*
```

Example usage:
```
cd <prefix_dir>
make -f share/petsc/examples/gmakefile.example
```
will run tests in ```<prefix_dir>/tests```.

Another example:
```
cd <prefix_dir>/share/petsc/examples/
make -f gmakefile.example TESTDIR=$PWD/mytests
```
will run tests in ```<prefix_dir>/share/petsc/examples/mytests```.

For developers, other than ```gmakefile``` -> ```gmakefile.examples```,
it should remain the same.

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Merge remote-tracking branch 'origin/balay/with-fortran-bindings'

testsuite: suppress clang warning using CXXFLAGS=-Wno-depricated

nightlylogs: filter out warnings on opensolaris and filenames on windows [use . to match dos linefeed char]

testsuite: remove '# TODO' lines from nightlylogs

using PETSC_ARCH in toplevel makefile can cause grief with prefix install so use PETSCCONF_H

Reported-by: "Jose E. Roman" <jroman@dsic.upv.es>

Merged in jose/test-makefile (pull request #685)

Fix test makefile

Fix test makefile: TESTEXAMPLES_ variable should be in capital letters