Fixes github#88 (loose of query string). Added a testcase.

Note that test case is NOT cover our code, but may say if your compiler is quite nasty.

src/gtests_functions.cpp

@@ -1195,5 +1195,14 @@ TEST ( functions, sphSplit )
	ASSERT_STREQ ( dParts[1].cstr (), "a" );
}

// as we found g++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28) works strange with curly initializer of refs
TEST ( functions, curledref )
{
	CSphString sProof="abc";
	const CSphString &sTest { sProof };
	const CSphString &sTestc ( sProof );
	ASSERT_TRUE ( &sProof==&sTestc ) << "curly brackets";
	ASSERT_TRUE ( &sProof==&sTest ) << "figured brackets";
}

src/searchdhttp.cpp

@@ -690,7 +690,7 @@ class HttpHandler_c
{
public:
	HttpHandler_c ( const CSphString & sQuery, int iCID, bool bNeedHttpResponse )
		: m_sQuery { sQuery }
		: m_sQuery ( sQuery )
		, m_iCID ( iCID )
		, m_bNeedHttpResponse ( bNeedHttpResponse )
	{}