Mark conflicts between newer packages and Intel 14 compilers (#13729)

* Mark compiler/version conflict for CMake

Intel 14 lacks some C++11 features needed to compile new versions of
cmake.
```
/tmp/s3j/spack-stage/spack-stage-cmake-3.15.5-46lgp4ybhopy2p4rr66rxnew5iaddvmg/spack-src/Source/
cm_static_string_view.hxx(28): error: expected an operator
   friend static_string_view operator"" _s(const char* data, size_t
                                     ^
```

* Mark compiler/version conflict for icu4c

With Intel 14.0.4 on Linux for icu4c 60.1 and higher:
```
locid.cpp(1156): error #1140: a using-declaration may not name a constructor or destructor
        using KeywordEnumeration::KeywordEnumeration;
```

* Mark compiler/version conflict for nasm

Error installing `nasm@2.14.02%intel@14.0.4`:
```
In file included from nasmlib/crc64.c(35):
./include/nasmlib.h(116): error: expected a ";"
  fatal_func nasm_assert_failed(const char *, int, const char *);
```

* Mark compiler/version conflict for bison

Installing `bison@3.4.2%intel@14.0.4`:
```
In file included from /tmp/s3j/spack-stage/spack-stage-bison-3.4.2-
uzjszv4owvqsymjpxtxvvegfavc6k5my/spack-src/lib/quotearg.c(33):
/tmp/s3j/spack-stage/spack-stage-bison-3.4.2-uzjszv4owvqsymjpxtxvvegfavc6k5my/spack-src/lib/
xalloc.h(51): warning #303: explicit type is missing ("int" assumed)
  extern _Noreturn void xalloc_die (void);
```

* Mark compiler/version conflict for icu4c

With `icu4c@60.1%intel@16.0.4` and `icu4c@64.1%intel@16.0.4`:

```
In file included from ucurr.cpp(26):
static_unicode_sets.h(130): error #913: invalid multibyte character sequence
      {POUND_SIGN, u'£'},
                     ^
```

* Change conflict comments into messages

var/spack/repos/builtin/packages/bison/package.py

@@ -31,6 +31,9 @@ class Bison(AutotoolsPackage):
 
     patch('pgi.patch', when='@3.0.4')
 
+    conflicts('%intel@:14', when='@3.4.2:',
+              msg="Intel 14 has immature C11 support")
+
     if sys.platform == 'darwin' and macos_version() >= Version('10.13'):
         patch('secure_snprintf.patch', level=0, when='@3.0.4')
 

var/spack/repos/builtin/packages/cmake/package.py

@@ -117,6 +117,8 @@ class Cmake(Package):
 
     # https://gitlab.kitware.com/cmake/cmake/issues/18166
     conflicts('%intel', when='@3.11.0:3.11.4')
+    conflicts('%intel@:14', when='@3.14:',
+              msg="Intel 14 has immature C++11 support")
 
     phases = ['bootstrap', 'build', 'install']
 

var/spack/repos/builtin/packages/icu4c/package.py

@@ -29,6 +29,9 @@ class Icu4c(AutotoolsPackage):
 
     depends_on('python', type='build', when='@64.1:')
 
+    conflicts('%intel@:16', when='@60.1:',
+              msg="Intel compilers have immature C++11 and multibyte support")
+
     configure_directory = 'source'
 
     def url_for_version(self, version):

var/spack/repos/builtin/packages/nasm/package.py

@@ -22,3 +22,6 @@ class Nasm(AutotoolsPackage):
     # Fix compilation with GCC 8
     # https://bugzilla.nasm.us/show_bug.cgi?id=3392461
     patch('https://src.fedoraproject.org/rpms/nasm/raw/0cc3eb244bd971df81a7f02bc12c5ec259e1a5d6/f/0001-Remove-invalid-pure_func-qualifiers.patch', level=1, sha256='ac9f315d204afa6b99ceefa1fe46d4eed2b8a23c7315d32d33c0f378d930e950', when='@2.13.03 %gcc@8:')
+
+    conflicts('%intel@:14', when='@2.14:',
+              msg="Intel 14 has immature C11 support")