Enhance the command-line shell to be in auto-explain mode by default. It is

no longer necessary to use the ".explain" command to put the shell into a mode
where the EXPLAIN output is formatted nicely.  That now happens automatically.

FossilOrigin-Name: 751915cb7e4981661a40dc5e4d029ab27434c2d9

diff --cc manifest
index 972cf743530c9f535f7363494c546beac34cc6c9,65f5e85dfc7c57c36573780d363a7cb98d7195f1..e16fe81449d68fb0ccaa7323e6a7d83d08a169e9
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sMSVC\smakefile\soptions\sthat\senable\scontrol-flow\sguard.
- D 2016-02-09T18:28:20.640
 -C Improved\sauto-detection\sof\sEXPLAIN\soutput\sin\sthe\sshell.
 -D 2016-02-09T20:04:07.701
++C Enhance\sthe\scommand-line\sshell\sto\sbe\sin\sauto-explain\smode\sby\sdefault.\s\sIt\sis\nno\slonger\snecessary\sto\suse\sthe\s".explain"\scommand\sto\sput\sthe\sshell\sinto\sa\smode\nwhere\sthe\sEXPLAIN\soutput\sis\sformatted\snicely.\s\sThat\snow\shappens\sautomatically.
++D 2016-02-09T20:11:14.398
  F Makefile.in 95ea52e9c02962e31f986fe8ea5805104c84f94b
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 0fe3b22f8e29bcde0533ada7957a5f15835d797a
@@@ -1427,7 -1427,7 +1427,8 @@@ F tool/vdbe_profile.tcl 246d0da094856d7
  F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
  F tool/warnings.sh 48bd54594752d5be3337f12c72f28d2080cb630b
  F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
- P 992282399cd2d1fc52ff5a1a4bff59f30b62899a
- R 339c4dc7dafb8a9f839919868c327cb9
- U mistachkin
- Z 87542794a9bfaf638d39bc9a323993e0
 -P 1d62aa6b315df47cafb33da7ca79d3386a2fdd48
++P 51b6823f4c9376d549f572f5a33cac1e4c9783a2 6c6d7a6e89e67cdb0813d3eebb869aafb43d43ed
+ R 7efe35d4fa73e934642e7f03926fba5a
++T +closed 6c6d7a6e89e67cdb0813d3eebb869aafb43d43ed
+ U drh
 -Z d64951a4b1ff916463dbab9f9acfa416
++Z 1d6fcdd166387e79c0e00d781ecb3274

diff --cc manifest.uuid
index 59daec470ff137097e59d51f3959e2ac56d4ba6d,7064810a82118b3983aba27bc6906b07b66e375c..8d44ae8ba160100e94669570801715a1c2e66dbe
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 51b6823f4c9376d549f572f5a33cac1e4c9783a2
 -6c6d7a6e89e67cdb0813d3eebb869aafb43d43ed
++751915cb7e4981661a40dc5e4d029ab27434c2d9