Add a new merge strategy by Fredrik Kuivinen.

I really wanted to try this out, instead of asking for an adjustment
to the 'git merge' driver and waiting.  For now the new strategy is
called 'fredrik' and not in the list of default strategies to be tried.

The script wants Python 2.4 so this commit also adjusts Debian and RPM
build procecure files.

Signed-off-by: Junio C Hamano <junkio@cox.net>

Author: Junio C Hamano

.gitignore

@@ -43,6 +43,7 @@ git-mailinfo
 git-mailsplit
 git-merge
 git-merge-base
+git-merge-fredrik
 git-merge-index
 git-merge-octopus
 git-merge-one-file

Makefile

@@ -48,6 +48,7 @@ ALL_CFLAGS = $(CFLAGS) $(PLATFORM_DEFINES) $(DEFINES)
 prefix = $(HOME)
 bindir = $(prefix)/bin
 template_dir = $(prefix)/share/git-core/templates/
+GIT_PYTHON_DIR = $(prefix)/share/git-core/python
 # DESTDIR=
 
 CC = gcc
@@ -81,6 +82,9 @@ SCRIPT_PERL = \
 	git-archimport.perl git-cvsimport.perl git-relink.perl \
 	git-rename.perl git-shortlog.perl
 
+SCRIPT_PYTHON = \
+	git-merge-fredrik.py
+
 # The ones that do not have to link with lcrypto nor lz.
 SIMPLE_PROGRAMS = \
 	git-get-tar-commit-id git-mailinfo git-mailsplit git-stripspace \
@@ -105,6 +109,9 @@ PROGRAMS = \
 	git-upload-pack git-verify-pack git-write-tree \
 	$(SIMPLE_PROGRAMS)
 
+PYMODULES = \
+	gitMergeCommon.py
+
 ifdef WITH_SEND_EMAIL
 	SCRIPT_PERL += git-send-email.perl
 endif
@@ -150,6 +157,9 @@ endif
 ifndef PERL_PATH
 	PERL_PATH = /usr/bin/perl
 endif
+ifndef PYTHON_PATH
+	PYTHON_PATH = /usr/bin/python
+endif
 
 ifndef NO_OPENSSL
 	LIB_OBJS += epoch.o
@@ -189,7 +199,9 @@ endif
 DEFINES += '-DSHA1_HEADER=$(SHA1_HEADER)'
 
 SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH)) \
-	  $(patsubst %.perl,%,$(SCRIPT_PERL)) gitk
+	  $(patsubst %.perl,%,$(SCRIPT_PERL)) \
+	  $(patsubst %.py,%,$(SCRIPT_PYTHON)) \
+	  gitk
 
 ### Build rules
 
@@ -214,6 +226,13 @@ $(patsubst %.perl,%,$(SCRIPT_PERL)) : % : %.perl
 	sed -e '1s|#!.*perl|#!$(PERL_PATH)|' $@.perl >$@
 	chmod +x $@
 
+$(patsubst %.py,%,$(SCRIPT_PYTHON)) : % : %.py
+	rm -f $@
+	sed -e '1s|#!.*python|#!$(PYTHON_PATH)|' \
+	    -e 's|@@GIT_PYTHON_PATH@@|$(GIT_PYTHON_DIR)|g' \
+		$@.py >$@
+	chmod +x $@
+
 %.o: %.c
 	$(CC) -o $*.o -c $(ALL_CFLAGS) $<
 %.o: %.S
@@ -274,6 +293,8 @@ install: $(PROGRAMS) $(SCRIPTS)
 	$(INSTALL) git-revert $(DESTDIR)$(bindir)/git-cherry-pick
 	sh ./cmd-rename.sh $(DESTDIR)$(bindir)
 	$(MAKE) -C templates install
+	$(INSTALL) -m755 -d $(DESTDIR)$(GIT_PYTHON_DIR)
+	$(INSTALL) $(PYMODULES) $(DESTDIR)$(GIT_PYTHON_DIR)
 
 install-doc:
 	$(MAKE) -C Documentation install

debian/control

@@ -8,7 +8,7 @@ Standards-Version: 3.6.1
 Package: git-core
 Architecture: any
 Depends: ${shlibs:Depends}, ${perl:Depends}, ${misc:Depends}, patch, rcs
-Recommends: rsync, curl, ssh, libmail-sendmail-perl, libemail-valid-perl
+Recommends: rsync, curl, ssh, libmail-sendmail-perl, libemail-valid-perl, python (>= 2.4.0)
 Suggests: cogito
 Conflicts: git, cogito (<< 0.13)
 Description: The git content addressable filesystem

debian/rules

@@ -41,7 +41,7 @@ MAN_DESTDIR := $(DESTDIR)/$(MANDIR)
 build: debian/build-stamp
 debian/build-stamp:
 	dh_testdir
-	$(MAKE) prefix=$(PREFIX) all doc
+	$(MAKE) prefix=$(PREFIX) PYTHON_PATH=/usr/bin/python2.4 all doc
 	touch debian/build-stamp
 
 debian-clean:

git-core.spec.in

@@ -10,7 +10,7 @@ URL: 		http://kernel.org/pub/software/scm/git/
 Source: 	http://kernel.org/pub/software/scm/git/%{name}-%{version}.tar.gz
 BuildRequires:	zlib-devel, openssl-devel, curl-devel  %{!?_without_docs:, xmlto, asciidoc > 6.0.3}
 BuildRoot:	%{_tmppath}/%{name}-%{version}-root
-Requires: 	sh-utils, diffutils, rsync, rcs, mktemp >= 1.5
+Requires: 	sh-utils, diffutils, rsync, rcs, python >= 2.4
 
 %description
 This is a stupid (but extremely fast) directory content manager.  It