Import SQLite 3.8.7.4.

third_party/sqlite/src/tool/mksqlite3internalh.tcl

 #!/usr/bin/tclsh
 #
 # To build a single huge source file holding all of SQLite (or at
 # least the core components - the test harness, shell, and TCL 
 # interface are omitted.) first do
 #
 #      make target_source
 #
 # The make target above moves all of the source code files into
 # a subdirectory named "tsrc".  (This script expects to find the files
@@ skipping 42 matching lines @@
 # text of the file in-line.  The file only needs to be included once.
 #
 foreach hdr {
    btree.h
    btreeInt.h
    hash.h
    hwtime.h
    keywordhash.h
    opcodes.h
    os_common.h
+   os_setup.h
+   os_win.h
    os.h
-   os_os2.h
    pager.h
    parse.h
    sqlite3ext.h
    sqlite3.h
    sqliteInt.h
    sqliteLimit.h
    vdbe.h
    vdbeInt.h
 } {
   set available_hdr($hdr) 1
@@ skipping 62 matching lines @@
    parse.h
    sqlite3ext.h
    vdbe.h
 } {
   if {$available_hdr($file)} {
     copy_file tsrc/$file
   }
 }
 
 close $out