Update sqlite to 3.7.3.

third_party/sqlite/src/Makefile.linux-gcc

 #!/usr/make
 #
 # Makefile for SQLITE
 #
 # This is a template makefile for SQLite.  Most people prefer to
 # use the autoconf generated "configure" script to generate the
 # makefile automatically.  But that does not work for everybody
 # and in every situation.  If you are having problems with the
 # "configure" script, you might want to try this makefile as an
 # alternative.  Create a copy of this file, edit the parameters
@@ skipping 96 matching lines @@
 MKSHLIB = gcc -shared
 SO = so
 SHPREFIX = lib
 # SO = dll
 # SHPREFIX =
 
 #### Extra compiler options needed for programs that use the TCL library.
 #
 TCL_FLAGS = -I/usr/include/tcl8.4
 #TCL_FLAGS = -DSTATIC_BUILD=1
-#TCL_FLAGS = -I/home/drh/tcltk/8.4linux
-#TCL_FLAGS = -I/home/drh/tcltk/8.4win -DSTATIC_BUILD=1
+#TCL_FLAGS = -I/home/drh/tcltk/8.5linux
+#TCL_FLAGS = -I/home/drh/tcltk/8.5win -DSTATIC_BUILD=1
 #TCL_FLAGS = -I/home/drh/tcltk/8.3hpux
 
 #### Linker options needed to link against the TCL library.
 #
 LIBTCL = -ltcl8.4 -lm -ldl
-#LIBTCL = /home/drh/tcltk/8.4linux/libtcl8.4g.a -lm -ldl
-#LIBTCL = /home/drh/tcltk/8.4win/libtcl84s.a -lmsvcrt
+#LIBTCL = /home/drh/tcltk/8.5linux/libtcl8.5g.a -lm -ldl
+#LIBTCL = /home/drh/tcltk/8.5win/libtcl85s.a -lmsvcrt
 #LIBTCL = /home/drh/tcltk/8.3hpux/libtcl8.3.a -ldld -lm -lc
 
 #### Additional objects for SQLite library when TCL support is enabled.
 #TCLOBJ =
 TCLOBJ = tclsqlite.o
 
 #### Compiler options needed for programs that use the readline() library.
 #
 READLINE_FLAGS =
 #READLINE_FLAGS = -DHAVE_READLINE=1 -I/usr/include/readline
 
 #### Linker options needed by programs using readline() must link against.
 #
 LIBREADLINE =
 #LIBREADLINE = -static -lreadline -ltermcap
 
 #### Which "awk" program provides nawk compatibilty
 #
 # NAWK = nawk
 NAWK = awk
 
 # You should not have to change anything below this line
 ###############################################################################
 include $(TOP)/main.mk