Enhance the path arguments in JSON functions to access "#-N" array indexes.

FossilOrigin-Name: ffeec62cb5223ae70bc1889df4c0b241f5d17b1a10156362ca59953028741480

diff --cc manifest
index 49138471bcc53b2b0757d1f066acac0ae6b1c235,76300c848d609d0cc9584bada27b6c390a7cb5e5..a0c3b95975012f668ba4df4a0e992211f0fa4e8c
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sa\smemory\sleak\sin\sfts5\serror\shandling\scode.
- D 2019-11-23T08:36:35.474
 -C Extend\sthe\sjson-path\smechanism\swith\sarray\sindexes\sof\sthe\sform\s"#"\sor\s"#-n"\sfor\nsome\spositive\snumber\s"n",\sto\sreference\sthe\send\sof\san\sarray.
 -D 2019-11-22T17:37:56.495
++C Enhance\sthe\spath\sarguments\sin\sJSON\sfunctions\sto\saccess\s"#-N"\sarray\sindexes.
++D 2019-11-23T08:51:21.228
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -1850,7 -1851,10 +1851,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
--P 34343c4b0657767f2676a2a9feb670cf000824e3eadfb1a6d87b57404191d8f9
- R 647490f9972b5ad6b10dfe256dcbb8a2
- U dan
- Z 1cb9b1e092594c250aea1afbf779c5a9
 -R c6da582f868a5f82d03ec9634a7b8150
 -T *branch * json-path-enhancement
 -T *sym-json-path-enhancement *
 -T -sym-trunk *
++P de6637e15d95b7aee2caea8b8d5b9865f276cbbf152ecf0401c4c7bfdf6dee6f 35ed68a651f4cf8740597433b0f1c3b345841868022e0904e9f342840ba0e502
++R 0f33bb5fad7c4c628b306f509d5f962d
++T +closed 35ed68a651f4cf8740597433b0f1c3b345841868022e0904e9f342840ba0e502
+ U drh
 -Z 4a48cd4a80fd585147d8b1e47ef59f7e
++Z 604b4a7ce2ba7e5019d946836f03e6f7

diff --cc manifest.uuid
index c3ea976b26408c84be3564bae3d964945cb44264,fa75b62e991684cadba57d8c81232e23a213c1ce..4856962972af14e049496f8abd250763727961c7
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- de6637e15d95b7aee2caea8b8d5b9865f276cbbf152ecf0401c4c7bfdf6dee6f
 -35ed68a651f4cf8740597433b0f1c3b345841868022e0904e9f342840ba0e502
++ffeec62cb5223ae70bc1889df4c0b241f5d17b1a10156362ca59953028741480