scripts: refine static linking check to better guide the user

The current mechanism to check if static linking is possible, and the mesage
displayed on failure, can be puzzling to the unsuspecting user.

Also, the current implementation is not using the existing infrastructure,
and is thus difficult to enhance with new tests.

So, switch to using the standard CT_DoExecLog infra, and use four tests to
check for the host compiler:
- check we can run it
- check it can build a trivial program
- check it can statically link that program
- check if it statically link with libstdc++

That should cover most of the problems. Hopefully.

(At the same time, fix a typo in a comment)

Signed-off-by: Daniel Price <daniel.price@gmail.com>
[yann.morin.1998@free.fr: split original patch for self-contained changes]
[yann.morin.1998@free.fr: use steps to better see gcc's output]
[yann.morin.1998@free.fr: commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <163f86b5216fc08c672a.1353459722@nipigon.dssd.com>
Patchwork-Id: 200536

 From 83a09cd5c9ed9afd87a7d1d17319c2fd2203ad0f Mon Sep 17 00:00:00 2001

 From: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

 Date: Thu, 21 Jan 2010 10:36:13 +0100

 Subject: [PATCH 04/15] rpc: fix typo in version mismatch msg

 Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

 ---

  libc/inet/rpc/rpc_prot.c |    2 +-

  1 files changed, 1 insertions(+), 1 deletions(-)

 diff --git a/libc/inet/rpc/rpc_prot.c b/libc/inet/rpc/rpc_prot.c

 index 74658e6..229f988 100644

 --- a/libc/inet/rpc/rpc_prot.c

 +++ b/libc/inet/rpc/rpc_prot.c

 @@ -229,7 +229,7 @@ rejected (enum reject_stat rjct_stat,

  {

    switch (rjct_stat)

      {

 -    case RPC_VERSMISMATCH:

 +    case RPC_MISMATCH:

        error->re_status = RPC_VERSMISMATCH;

        return;

      case AUTH_ERROR:

 -- 

 1.6.6.1