Fix for GCC build

Fix compiler error "NNNN.a uses VFP register arguments" when building 4.4 using GCC.
This has been suggested by @Roceh in issue NETMF#335.
I've sucessfully build STM32F4DISCOVERY and MCBSTM32F400_NONET.
Tested STM32F4DISCOVERY  on real hardware and it seems to work OK.
Couldn't test the MCBSTM32F400_NONET because I don't have that board.
Fix-for-GCC-build (NETMF#341)

Author: kmshim

Solutions/MCBSTM32F400/MCBSTM32F400.settings

@@ -13,7 +13,8 @@
         <IsSolutionWizardVisible>True</IsSolutionWizardVisible>
         <ENDIANNESS>le</ENDIANNESS>
         <NO_BOOTLOADER_COMPRESSION>true</NO_BOOTLOADER_COMPRESSION>
-        <TCP_IP_STACK>LWIP_1_4_1_OS</TCP_IP_STACK>
+	<TCP_IP_STACK>LWIP_1_4_1_OS</TCP_IP_STACK>
+	<PLATFORM_EMULATED_FLOATINGPOINT Condition="'$(COMPILER_TOOL)'=='GCC'">true</PLATFORM_EMULATED_FLOATINGPOINT>
     </PropertyGroup>
     <PropertyGroup>
         <OEMSystemInfoString>Copyright (C) Microsoft Corporation</OEMSystemInfoString>
@@ -26,4 +27,4 @@
     <Import Project="$(SPOCLIENT)\devicecode\Targets\Native\STM32F4\STM32F4.settings" />
     <!-- This must be imported after the native build settings as it overrides the TARGETCODEBASE and Target type-->
     <Import Project="$(SPOCLIENT)\devicecode\Targets\OS\CMSIS_RTOS\CMSIS_RTOS.settings" Condition="'$(reducesize)' == 'false' AND '$(TCP_IP_STACK)'=='LWIP_1_4_1_OS'"/>
-</Project>
+</Project>

Solutions/MCBSTM32F400/MCBSTM32F400_NONET.settings

@@ -12,7 +12,8 @@
         <PLATFORM>MCBSTM32F400</PLATFORM>
         <IsSolutionWizardVisible>True</IsSolutionWizardVisible>
         <ENDIANNESS>le</ENDIANNESS>
-        <NO_BOOTLOADER_COMPRESSION>true</NO_BOOTLOADER_COMPRESSION>
+	<NO_BOOTLOADER_COMPRESSION>true</NO_BOOTLOADER_COMPRESSION>
+	<PLATFORM_EMULATED_FLOATINGPOINT Condition="'$(COMPILER_TOOL)'=='GCC'">true</PLATFORM_EMULATED_FLOATINGPOINT>
     </PropertyGroup>
     <PropertyGroup>
         <OEMSystemInfoString>Copyright (C) Microsoft .NET Foundation</OEMSystemInfoString>
@@ -22,4 +23,4 @@
         <IncludePaths Include="Solutions\MCBSTM32F400" />
     </ItemGroup>
     <Import Project="$(SPOCLIENT)\devicecode\Targets\Native\STM32F4\STM32F4.settings" />
-</Project>
+</Project>

Solutions/STM32F4DISCOVERY/STM32F4DISCOVERY.settings

@@ -16,6 +16,7 @@
     <IsSolutionWizardVisible>True</IsSolutionWizardVisible>
     <ENDIANNESS>le</ENDIANNESS>
     <NO_BOOTLOADER_COMPRESSION>true</NO_BOOTLOADER_COMPRESSION>
+    <PLATFORM_EMULATED_FLOATINGPOINT Condition="'$(COMPILER_TOOL)'=='GCC'">true</PLATFORM_EMULATED_FLOATINGPOINT>
   </PropertyGroup>
   <PropertyGroup>
     <!-- FIXME: Replaced with an appropriate value. -->
@@ -25,4 +26,4 @@
     <IncludePaths Include="Solutions\STM32F4DISCOVERY" />
   </ItemGroup>
   <Import Project="$(SPOCLIENT)\devicecode\Targets\Native\STM32F4\STM32F4.settings" />
-</Project>
+</Project>