First attempt to add json1 and fts5 to the amalgamation. This check-in does

not compile.

FossilOrigin-Name: d820a1bd1b8dd702d1b3a099af393530cc5a5d51

tool/mksqlite3c.tcl

@@ -378,6 +378,8 @@ foreach file {
    fts3_icu.c
    sqlite3rbu.c
    dbstat.c
+   json1.c
+   fts5.c
 } {
   copy_file tsrc/$file
 }

tool/mksqlite3h.tcl

@@ -71,6 +71,7 @@ fconfigure stdout -translation lf
 set filelist [subst {
   $TOP/src/sqlite.h.in
   $TOP/ext/rtree/sqlite3rtree.h
+  $TOP/ext/fts5/fts5.h
 }]
 
 # These are the functions that accept a variable number of arguments.  They