Towards getting ORDER BY to match against the correctin columns.

This version only looks at the left-most column in a compound SELECT.
That is the correct thing to do, but not what SQLite has historically done. (CVS 4620)

FossilOrigin-Name: bbddf16ac9539c7d48adfc73c5a90eecb8df6865

manifest

@@ -1,5 +1,5 @@
-C Minor\scleanup\schanges\son\sthe\sOP_StackDepth\sopcode.\s\sAdded\sthe\nsidedelete\stest\sfor\sadditional\stesting\sof\sticket\s#2832.\s(CVS\s4619)
-D 2007-12-12T22:24:13
+C Towards\sgetting\sORDER\sBY\sto\smatch\sagainst\sthe\scorrectin\scolumns.\nThis\sversion\sonly\slooks\sat\sthe\sleft-most\scolumn\sin\sa\scompound\sSELECT.\nThat\sis\sthe\scorrect\sthing\sto\sdo,\sbut\snot\swhat\sSQLite\shas\shistorically\sdone.\s(CVS\s4620)
+D 2007-12-13T02:45:31
 F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
 F Makefile.in 0590398f62fc2c456ff4c45e9741f5a718b7e2ac
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -129,9 +129,9 @@ F src/pager.h f504f7ae84060fee0416a853e368d3d113c3d6fa
 F src/parse.y a780b33ef45dd7b3272319cf91e609d6f109a31c
 F src/pragma.c 0246032dbe681dded8710ac43eaf654eead1434e
 F src/prepare.c f811fdb6fd4a82cca673a6e1d5b041d6caf567f1
-F src/printf.c c94a2571a828b927c64f5e3ed3584da8a91fcaec
+F src/printf.c 5732e393c45be7c09bfca9a786daef017e0066ef
 F src/random.c 4a22746501bf36b0a088c66e38dde5daba6a35da
-F src/select.c b7408624b55f58e5aa8521edb177b26ad72f968b
+F src/select.c 63cc67c9a9cc3f32ec2205d2c769d94cd2fc6f60
 F src/server.c 087b92a39d883e3fa113cae259d64e4c7438bc96
 F src/shell.c c97be281cfc3dcb14902f45e4b16f20038eb83ff
 F src/sqlite.h.in b16a7127dad4a3e5b1b26b3d64241f3373aa12ea
@@ -389,7 +389,7 @@ F test/misc6.test 953cc693924d88e6117aeba16f46f0bf5abede91
 F test/misc7.test 3fbd0a9e3dd03331d9d76acd47bc179e1a97e15e
 F test/misuse.test 30b3a458e5a70c31e74c291937b6c82204c59f33
 F test/notnull.test 44d600f916b770def8b095a9962dbe3be5a70d82
-F test/null.test 9503e1f63e959544c006d9f01709c5b5eab67d54
+F test/null.test 93e48033673841240f137fd621317cc73b69eeb8
 F test/onefile.test b9cce375fd2a41ee3afa79a0a808954046b74458
 F test/openv2.test f5dd6b23e4dce828eb211649b600763c42a668df
 F test/pager.test 60303481b22b240c18d6dd1b64edcecc2f4b5a97
@@ -600,7 +600,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 48947e2b75d39c5be0d08fe1c7b888d9065f9116
-R bb83372b6806afd80973cd2815dddbab
+P c0689409320de1532be0c0cae12b4b716f6bffb9
+R 1ec374c4daffe98452f78ad79abdb48f
 U drh
-Z ed8f32215ce7ea227bff236ab22d0da6
+Z 92df68b2adbb4d9afb7d6635a4dfe3d8