Warnings when compiling code with nmake on Windows (x64)

Hi all,

When compiling the code using nmake on Windows, I am seeing a bunch of warnings:
connection.c(3211) : warning C4267: 'function' : conversion from 'size_t' to 'in
t', possible loss of data
connection.c(3241) : warning C4267: 'function' : conversion from 'size_t' to 'in
t', possible loss of data
convert.c
convert.c(1180) : warning C4244: 'function' : conversion from 'SQLLEN' to 'int',
 possible loss of data
convert.c(3186) : warning C4244: '=' : conversion from '__int64' to 'int', possi
ble loss of data
convert.c(3233) : warning C4244: '=' : conversion from '__int64' to 'int', possi
ble loss of data
convert.c(3244) : warning C4244: '=' : conversion from '__int64' to 'int', possi
ble loss of data
convert.c(3253) : warning C4244: '=' : conversion from '__int64' to 'int', possi
ble loss of data
convert.c(3690) : warning C4267: '=' : conversion from 'size_t' to 'unsigned int
', possible loss of data
convert.c(4055) : warning C4267: '=' : conversion from 'size_t' to 'int', possib
le loss of data
convert.c(4067) : warning C4267: '=' : conversion from 'size_t' to 'int', possib
le loss of data
convert.c(4163) : warning C4267: '=' : conversion from 'size_t' to 'int', possib
le loss of data
info.c(1504) : warning C4267: '=' : conversion from 'size_t' to 'SQLSMALLINT', p
ossible loss of data
parse.c(144) : warning C4244: '=' : conversion from '__int64' to 'int', possible
 loss of data
parse.c(1342) : warning C4244: '=' : conversion from '__int64' to 'int', possibl
e loss of data
parse.c(1361) : warning C4244: '=' : conversion from '__int64' to 'int', possibl
e loss of data
pgtypes.c
pgtypes.c(1493) : warning C4267: '=' : conversion from 'size_t' to 'int', possib
le loss of data
Generating Code...
c:\users\mpaquier\git\pgodbc\convert.c(692) : warning C4723: potential
divide by 0
setup.c(393) : warning C4267: '=' : conversion from 'size_t' to 'int', possible
loss of data
setup.c(490) : warning C4244: '=' : conversion from '__int64' to 'int', possible
 loss of data
socket.c
statement.c
statement.c(1045) : warning C4244: '=' : conversion from '__int64' to 'int', pos
sible loss of data
statement.c(2869) : warning C4267: '=' : conversion from 'size_t' to 'int', poss
ible loss of data

The attached patch is a tentative to fix them, except the division by
0 in convert.c I was not really sure how to fix the division by 0
case... This work has been done on a Win7 box using Visual 10 and SDK
7.1. Most of those warnings are caused by difference of 64b pointers
with results casted back to int4.

Comments welcome.
--
Michael