wininet: Add a new NETCON_query_data_available function.

[Robert Shearman]

Use it to implement the behaviour where InternetReadFileExA does a 
synchronous request if the data is available and asynchronous otherwise.
---
  configure.ac                 |    1 +
  dlls/wininet/internet.c      |   49 
+++++++++++++++++++++++++++--------------
  dlls/wininet/internet.h      |    1 +
  dlls/wininet/netconnection.c |   35 ++++++++++++++++++++++++++++++
  4 files changed, 69 insertions(+), 17 deletions(-)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 53da4815643b4db56d5f63232e972dd738847f3c.diff
Type: text/x-patch
Size: 5539 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20070528/6f5144ba/53da4815643b4db56d5f63232e972dd738847f3c.bin