>>...1.Does my users need to install new Redistributable Packages every time I update Intel Composer?
It make sense to verify if there are changes in binaries and if Yes ( there are changes ) inform customers that new versions need to be downloaded and installed
>>...2.Where can I donwload proper Redistributable Packages? And how do I know which version is the one?
Intel Software Registration Centerhttps://registrationcenter.intel.com/regcenter/register.aspx
These are quotes from MSDN:
/MT - Causes your application to use the multithread, static version of the run-time library. Defines _MT and causes the compiler to place the library name LIBCMT.lib into the .obj file so that the linker will use LIBCMT.lib to resolve external symbols.
Note: In that case your application should not use any CRT DLLs.
/MD - Causes your application to use the multithread- and DLL-specific version of the run-time library. Defines _MT and _DLL and causes the compiler to place the library name MSVCRT.lib into the .obj file