[WP][!!!] (issue7 refract): adjust GPL phrase

src/ts/refract/Makefile

@@ -91,7 +91,7 @@ REFSUB=refract_readdata.o refract_skipdata.o refract_setdefaults.o \
   refract_message.o refract_dopicks.o refract_domodel.o refract_usage.o \
   refract_cmdopt.o refract_selfilestyle.o refract_preread.o \
   refract_pgdefaults.o refract_vpframe.o refract_plotoffset.o \
-  refract_setrefrange.o 
+  refract_setrefrange.o refract_avgamp.o
 REFOBS=refract.o $(addprefix sub/, $(REFSUB))
 
 # Fortran dependencies

src/ts/refract/sub/refract_avgamp.f

+c this is <sub/refract_avgamp.f>
+c ----------------------------------------------------------------------------
+c
+c Copyright (c) 2015 by Thomas Forbriger (BFO Schiltach) 
+c
+c calculate average amplitude in offset range (used by subroutine mpcfactors)
+c
+c ----
+c refract is free software; you can redistribute it and/or modify
+c it under the terms of the GNU General Public License as published by
+c the Free Software Foundation; either version 2 of the License, or
+c (at your option) any later version. 
+c 
+c refract is distributed in the hope that it will be useful,
+c but WITHOUT ANY WARRANTY; without even the implied warranty of
+c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+c GNU General Public License for more details.
+c 
+c You should have received a copy of the GNU General Public License
+c along with this program. If not, see <http://www.gnu.org/licenses/>.
+c ----
+c
+c REVISIONS and CHANGES
+c    07/12/2015   V1.0   Thomas Forbriger
+c
+c ============================================================================
+c
+c
+c ----- END OF sub/refract_avgamp.f ----- 

src/ts/refract/sub/refract_setrefrange.f

@@ -6,6 +6,22 @@ c
 c Set offset range to take amplitude scaling reference from, if not set
 c on command line.
 c
+c ----
+c refract is free software; you can redistribute it and/or modify
+c it under the terms of the GNU General Public License as published by
+c the Free Software Foundation; either version 2 of the License, or
+c (at your option) any later version. 
+c 
+c refract is distributed in the hope that it will be useful,
+c but WITHOUT ANY WARRANTY; without even the implied warranty of
+c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+c GNU General Public License for more details.
+c 
+c You should have received a copy of the GNU General Public License
+c along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+c ----
+c
 c REVISIONS and CHANGES
 c    07/12/2015   V1.0   Thomas Forbriger
 c