[gcc r12-3618] libstdc++: Rename tests with incorrect extension

[Jonathan Wakely]

https://gcc.gnu.org/g:749c31b345c2a37106b57ce805ea46a6d4765e09

commit r12-3618-g749c31b345c2a37106b57ce805ea46a6d4765e09
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Sep 17 12:25:40 2021 +0100

    libstdc++: Rename tests with incorrect extension
    
    The libstdc++ testsuite only runs .cc files, so these two old tests have
    never been run.
    
    Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/26_numerics/valarray/dr630-3.C: Moved to...
            * testsuite/26_numerics/valarray/dr630-3.cc: ...here.
            * testsuite/27_io/basic_iostream/cons/16251.C: Moved to...
            * testsuite/27_io/basic_iostream/cons/16251.cc: ...here.

Diff:
---
 libstdc++-v3/testsuite/26_numerics/valarray/{dr630-3.C => dr630-3.cc}  | 0
 libstdc++-v3/testsuite/27_io/basic_iostream/cons/{16251.C => 16251.cc} | 0
 2 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/libstdc++-v3/testsuite/26_numerics/valarray/dr630-3.C b/libstdc++-v3/testsuite/26_numerics/valarray/dr630-3.cc
similarity index 100%
rename from libstdc++-v3/testsuite/26_numerics/valarray/dr630-3.C
rename to libstdc++-v3/testsuite/26_numerics/valarray/dr630-3.cc
diff --git a/libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.C b/libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.cc
similarity index 100%
rename from libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.C
rename to libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.cc