Omit unnecessary fstat() calls for determining the database file size,

resulting in smaller and faster code.

FossilOrigin-Name: dd61c736775c53450821327495276485dced7935d0b4b5ebd17662731afc8adb

diff --cc manifest
index e267077f56fcd43cec328df8e40c94a758e90a0c,a0f87bf4e5f5456ec834beb9dccd388c7011a0fe..343f593baa10605a14ad3284a5defeec2fd79eb7
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\san\sissue\swith\sOPT_FEATURE_FLAGS\sin\sconfigure.ac.
- D 2017-05-29T17:43:06.652
 -C Avoid\sunnecessary\sfstat()\scalls\sto\sdetermine\sthe\sdatabase\ssize\swhen\ntransitioning\sinto\sa\sread\stransaction\son\sa\srollback-mode\sdatabase.
 -D 2017-05-29T16:45:45.492
++C Omit\sunnecessary\sfstat()\scalls\sfor\sdetermining\sthe\sdatabase\sfile\ssize,\nresulting\sin\ssmaller\sand\sfaster\scode.
++D 2017-05-29T17:59:29.162
  F Makefile.in 1cc758ce3374a32425e4d130c2fe7b026b20de5b8843243de75f087c0a2661fb
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 8eeb80162074004e906b53d7340a12a14c471a83743aab975947e95ce061efcc
@@@ -1581,7 -1581,7 +1581,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P cb29b838886769afe866b1172e3d5d7e36387149b79c51f91cf59da3f4a5f25b
- R e2b3a41fccdb38a48dfac65495552f5e
 -P c733a1dea37e4678e7bd0d3d0ca9b8eae1fbdc28615f75d8f1e5141aa53567d9
 -R 305c14b2512f47cedccd7e2033ab5eaa
++P 43ce3bd3a4b41ea757e308e563d6c1bf7f9c09f10e4766c536d0bf1042c45613 6c3476b513965df22d648f9a1b99733af753b44d51163cc7d42a69bf562300e1
++R 2857f5fe46b44ce298433361a62d485f
++T +closed 6c3476b513965df22d648f9a1b99733af753b44d51163cc7d42a69bf562300e1
  U drh
- Z 85ccc059a781b6d7bc65af64c2ca8af5
 -Z e2a7cd050c361ca9085d24d8c34886c7
++Z 051ef5e7e86a2fe2010357685cc35b1c

diff --cc manifest.uuid
index 3fbfed43c376b8ec194e085daf7c358c603226cd,e224b6b0b6a36866ed291805e56c8d8be258f3f5..ca5fba375ef77c9a6803861120b073aabdf278b9
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 43ce3bd3a4b41ea757e308e563d6c1bf7f9c09f10e4766c536d0bf1042c45613
 -6c3476b513965df22d648f9a1b99733af753b44d51163cc7d42a69bf562300e1
++dd61c736775c53450821327495276485dced7935d0b4b5ebd17662731afc8adb