Add support for TRUE and FALSE keywords and for operators IS TRUE, IS FALSE,

IS NOT TRUE, and IS NOT FALSE.  If there is are columns named TRUE or FALSE,
then the keywords resolve to the column names, for compatibility.  The
behavior of the "DEFAULT true" phrase is changed to mean what it says,
rather than being an alias for "DEFAULT 'true'".

FossilOrigin-Name: 9a7f02c50e6c8a3dc3addf4e51b7e04bd31670d6ce58d26d55273c43b5ecc8b0

diff --cc manifest
index 983bc3f72df2175f3c14f289079399bebb637a84,bdef730d7d15de453e3584c591fc46de0c99f464..50048f90680a323db75d631b6af365c012fcaa00
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C More\stests\spursuant\sto\sticket\s[36fae083b450e3af857a459e20].
- D 2018-02-26T17:03:03.328
 -C Clean\sup\scomments\sand\svariable\snames\sprior\sto\smerge.
 -D 2018-02-27T14:49:25.328
++C Add\ssupport\sfor\sTRUE\sand\sFALSE\skeywords\sand\sfor\soperators\sIS\sTRUE,\sIS\sFALSE,\nIS\sNOT\sTRUE,\sand\sIS\sNOT\sFALSE.\s\sIf\sthere\sis\sare\scolumns\snamed\sTRUE\sor\sFALSE,\nthen\sthe\skeywords\sresolve\sto\sthe\scolumn\snames,\sfor\scompatibility.\s\sThe\nbehavior\sof\sthe\s"DEFAULT\strue"\sphrase\sis\schanged\sto\smean\swhat\sit\ssays,\nrather\sthan\sbeing\san\salias\sfor\s"DEFAULT\s'true'".
++D 2018-02-27T15:40:59.030
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F Makefile.in a2d2fb8d17c39ab5ec52beb27850b903949080848236923f436156b72a958737
@@@ -486,10 -486,10 +486,10 @@@ F src/pragma.h bb83728944b42f6d409c77f5
  F src/prepare.c 259f4e7960c47082c9653f3d5f0c294abd68bb9c3aab86de7630700cba1c20fb
  F src/printf.c d3b7844ddeb11fbbdd38dd84d09c9c1ac171d21fb038473c3aa97981201cc660
  F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
- F src/resolve.c bbee7e31d369a18a2f4836644769882e9c5d40ef4a3af911db06410b65cb3730
+ F src/resolve.c 66c73fcb7719b8ff0e841b58338f13604ff3e2b50a723f9b8f383595735262f6
  F src/rowset.c 7b7e7e479212e65b723bf40128c7b36dc5afdfac
  F src/select.c f02352ac5cbb6fad3804add825743b924cfb6c742ba2e8666d726828a9985d73
 -F src/shell.c.in c1b14bc0bc1fe73a97dfaad55ca09f5d6e44f6019977d94e7e3d1861616035e1
 +F src/shell.c.in 47dac081e15544f4d4373a837215391459971b312c8bed15903e7e9045c3e652
  F src/sqlite.h.in 235e942dd8c01b414c2996828b4d0d2500faf8850f8b24ae17d31c172f519e69
  F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
  F src/sqlite3ext.h 83a3c4ce93d650bedfd1aa558cb85a516bd6d094445ee989740827d0d944368d
@@@ -1707,7 -1708,7 +1708,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P 7b3a75519aa72a6b49a125ee84946ba2c0722dd6644ee0c80ba567eb85daf5c9
- R 54e3679053cfb34f03d5fc5a51c25e95
- U mistachkin
- Z 67d82893997d32bf8b3a9fa69332f798
 -P adcb4665490404e8da2de128dd5df9aeed8e08893649dedb6788ebb5d957b400
 -R 691db3d03f207528a0777702d3649318
++P c26f236da61aef7c7a8fe38f1c7f33eea894c8fae38de6a085d4cce933a70502 6445519e91c4f98b4a9a45d5091d733c31497ebf0eb23a76edce3091f626035d
++R 74016598c506c5fb19fa13d7ec93e943
++T +closed 6445519e91c4f98b4a9a45d5091d733c31497ebf0eb23a76edce3091f626035d
+ U drh
 -Z 3708f8d55564f3165287f25ec6417cc9
++Z 4b60eba7ac8a552c151e343e027ad980

diff --cc manifest.uuid
index 5e91c27a63c2c9c308e84f8fada36ad197bd0943,d25d53f33e1f19585309fc204a03198bf8719ece..50dab302b515bc6ab360d762c12f4cd8559188a9
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- c26f236da61aef7c7a8fe38f1c7f33eea894c8fae38de6a085d4cce933a70502
 -6445519e91c4f98b4a9a45d5091d733c31497ebf0eb23a76edce3091f626035d
++9a7f02c50e6c8a3dc3addf4e51b7e04bd31670d6ce58d26d55273c43b5ecc8b0