Enable the use of coroutines as an alternative to manifesting views used

in a FROM clause.

FossilOrigin-Name: 9dca18f5fea84afbecb314ee1cdfb98430656af3

diff --cc manifest
index 9b374bdad5d096eb903b39f436caebbdbfcf7a07,07ba08517ff3087c2f848613b71ceed6ff288a24..144abcc80e5507153ea8a7ff785293dc9ca16ab9
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Make\sthe\smultiplexor\sand\sthe\sIntArray\sextensions\scallable\sfrom\sC++.
- D 2012-10-29T14:27:26.624
 -C Make\ssure\sthat\sthe\soptimizer\snever\stries\sto\screate\san\sautomatic\nindex\son\sa\scoroutine\ssubquery.
 -D 2012-10-30T15:31:31.124
++C Enable\sthe\suse\sof\scoroutines\sas\san\salternative\sto\smanifesting\sviews\sused\nin\sa\sFROM\sclause.
++D 2012-10-30T18:09:46.180
  F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
  F Makefile.in 82c41c0ed4cc94dd3cc7d498575b84c57c2c2384
  F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@@ -1021,7 -1021,7 +1021,7 @@@ F tool/vdbe-compress.tcl f12c884766bd14
  F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
  F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
  F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
- P 99f27d642fbaba02264a470977cde38c3a526d13
- R 07bc3a42510a6d7b1ec8ddb3f50b6182
 -P 4f1061230e0e5a66038a4db99f1ee6203e4d2b9f
++P cbd8fddf3b4cde840279502e1e9b151bb4bd42f0 f83aa0de8470748b3cd0bff232aeea3baf8dae53
+ R 4d92f802c3d1be35ade1de0afef59aa0
  U drh
- Z 118483038e9bfcfd996fdf110e0050f4
 -Z a71a8eb0758da05cfd0416f53ad3bce7
++Z 3cf95a6ff7a3079d84c74ccc0794b887

diff --cc manifest.uuid
index 4e0c750221009300d99f587ef500b809bfa1a94a,923c49cce35f458f2cafef1bcdcb565f6e3e044c..7e30236ca5f5935195f4b1cfe17c8ed80dfbfc3c
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- cbd8fddf3b4cde840279502e1e9b151bb4bd42f0
 -f83aa0de8470748b3cd0bff232aeea3baf8dae53
++9dca18f5fea84afbecb314ee1cdfb98430656af3